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3 years ago

Vf=vi−gt if the time is 2 seconds

Physics

1 answer:

Eddi Din [679]3 years ago

4 0

Vf=vi-gt. vf =0-9.8*2= 19.6 m/s

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A gas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kPa to a final volume of 0.065 m^3 while its te

USPshnik [31]

Answer:

286

Explanation:

p1v1/T1=p2v2/T2

then subtitude your values

T2=760*0.65*273/210*0.040

T2=135/8.4=16+273=289

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4 years ago

A butcher grinds 5 and 3/4 lb of meat then sells it for 2 and 2/3 pounds to the customer what is the maximum amount me that the

KiRa [710]

Answer:

The maximum amount of meat that the butcher can sell is $3\frac{1}{12}\:lb$

Explanation:

The maximum amount can be found by taking the difference of mixed numbers.

$5\frac{3}{4}-2\frac{2}{3}\\\\\mathrm{Subtract\:the\:numbers:}\:5-2=3\\\\\mathrm{Combine\:fractions:\:}\frac{3}{4}-\frac{2}{3}=\frac{1}{12}\\\\=3\frac{1}{12}\\$

Best Regards!

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3 years ago

Two 65.0 kg ice skaters are standing 2.00 m away from each other in the ice. What is the gravitational attraction between the tw

Paladinen [302]

Answer:

A) 7×10⁻⁸ N

Explanation:

r = Distance between the two skaters = 2 m

m₁ = m₂ = Mass of the two skaters = 65 kg

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From Newton's Law of Universal gravity

$F=G\frac{m_1m_2}{r^2}\\\Rightarrow F=6.67\times 10^{-11} \frac{65\times 65}{2^2}\\\Rightarrow F=7.045\times 10^{-8}\ N$

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7 0

4 years ago

Jan is holding an ice cube. What causes the ice to melt?

zmey [24]

It would be the temperature of her hand and also because it is going through the process of the water cycle it is changing from a solid to a liquid

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4 years ago

Find the length of the smallest standing wave that can be formed with light having frequency 600 THz

Reika [66]

Answer:

$L=2.5*10^-^7m$

Explanation:

From the question we are told that

Frequency of light $f= 600 THz$

Generally the equation for wave is mathematically given as

$\lambda=\frac{c}{\gamma}$

Where

$1THz=10^1^2$

$\lambda=\frac{3*10^8}{600*10^1^2}$

$\lambda=0.5*10^-^6m$

Generally the equation for a fundamental Frequency is mathematically given as

$L=\frac{\lambda}{2}$

$L=\frac{0.5*10^-^6}{2}$

Therefore the length of the smallest standing wave

$L=2.5*10^-^7m$

4 0

3 years ago